CN215634318U - Tensile nut dish spring subassembly - Google Patents
Tensile nut dish spring subassembly Download PDFInfo
- Publication number
- CN215634318U CN215634318U CN202122070313.2U CN202122070313U CN215634318U CN 215634318 U CN215634318 U CN 215634318U CN 202122070313 U CN202122070313 U CN 202122070313U CN 215634318 U CN215634318 U CN 215634318U
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- China
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- tooth socket
- facing
- interior facing
- wall
- inner tooth
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Abstract
The utility model discloses a stretching nut disc spring assembly which comprises an outer tooth socket, an inner tooth socket and a base disc spring, wherein the outer tooth socket is sleeved on the outer side of the inner tooth socket, the outer wall of the inner tooth socket is provided with an external thread, the outer tooth socket is in threaded connection with the inner tooth socket, the inner wall of the inner tooth socket is provided with an internal thread matched with a bolt, the screwing direction of the internal thread of the inner tooth socket is opposite to that of the external thread of the inner tooth socket, the bottom of the inner tooth socket extends towards the lower part of the outer tooth socket, the base disc spring is sleeved on the bottom of the inner tooth socket below the outer tooth socket, an inner hole in the top of the inner tooth socket is provided with a positioning internal spline matched with a torque tool, and the top of the outer tooth socket is uniformly provided with a plurality of screwing tooth mouths matched with the torque tool. The utility model has reasonable structure, convenient use, capability of providing more accurate compensation force, better differential compensation effect, difficult loosening of bolts in the use process and difficult leakage of flanges.
Description
Technical Field
The utility model particularly relates to a tensile nut disc spring assembly which is used for flange connection.
Background
In the prior art, the torque tension disc spring is usually matched with bolts and conventional nuts for use, when the flange is connected, a professional sleeve is matched with a hydraulic wrench or an electric wrench to fasten the bolts so as to achieve a required fastening torque value, the torque tension disc spring can perform difference compensation due to pressure and temperature fluctuation, if the stress and the compensation difference of each bolt are the same, the flange is closed in parallel, and the flange cannot leak due to different torque values.
However, because there is a gap between the torsional stretching disc spring and the bolt, for example, the inner diameter hole of the M30 disc spring reaches 32mm, the disc spring will deviate due to the gap in the installation process, causing the fastening position of each disc spring to be different, the different positions of the supporting points thereof cause different compensation resilience, the compensation of the difference is different, the stress points are also different, therefore, the precision has a certain deviation, the bolt is easy to loosen in the use process, causing the flange leakage, and the precision that can not meet the national standard requirement can not be achieved.
Therefore, there is a need in the art for a tension nut and disc spring assembly that provides more accurate compensation force, provides better differential compensation effect, and is not prone to loosening of bolts during use.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the stretching nut disc spring assembly which can provide more accurate compensation force, has better differential compensation effect and is difficult to loosen a bolt in the using process.
The utility model is realized by the following technical scheme: the utility model provides a tensile nut dish spring subassembly, includes outer facing, interior facing and base dish spring, outer facing cover is located the outside of interior facing, the outer wall of interior facing is provided with the external screw thread, outer facing with interior facing spiro union, the inner wall of interior facing be provided with be used for with bolt complex internal thread, the internal thread of interior facing revolve to with the external screw thread of interior facing revolves to opposite, the bottom of interior facing to the below of outer facing is stretched out, the bottom of interior facing in the below cover of outer facing is equipped with base dish spring, the hole at the top of interior facing be provided with be used for with moment of torsion frock complex location internal spline, the top of outer facing evenly be provided with a plurality ofly be used for with moment of torsion frock complex twist move the tooth mouth.
The outer periphery of the bottom of the inner tooth socket is provided with an external spline, and the inner ring of the base disc spring is provided with a spline groove used for being connected and matched with the external spline.
The inner wall of the outer tooth socket and the outer wall of the inner tooth socket are both provided with trapezoidal threads, and the inner wall of the inner tooth socket is provided with triangular threads.
The utility model has the beneficial effects that: the utility model has reasonable structure, convenient use, capability of providing more accurate compensation force, better differential compensation effect, difficult loosening of bolts in the use process and difficult leakage of flanges.
Drawings
FIG. 1 is a schematic side view of the present invention;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic perspective view of the present invention.
In the figure: 1-external tooth socket; 2-screwing the tooth mouth; 3-inner tooth socket; 4-external splines; 5-positioning the internal spline; 6-base disc spring.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
As shown in fig. 1-3, a tensile nut dish spring subassembly, including outer facing 1, interior facing 3 and base dish spring 6, the outside of interior facing 3 is located to outer facing 1 cover, the outer wall of interior facing 3 is provided with the external screw thread, outer facing 1 and the 3 spiro union of interior facing, the inner wall of interior facing 3 is provided with and is used for the internal thread with bolt complex, the internal thread of interior facing 3 revolves to the external screw thread opposite with interior facing 3, the bottom of interior facing 3 stretches out to the below of the outside facing 1, the bottom of interior facing 3 is equipped with base dish spring 6 in the below cover of outer facing 1, the hole at the top of interior facing 3 is provided with and is used for the location internal spline 5 with torque frock complex, the top of outer facing 1 evenly is provided with a plurality of twisting that are used for moving the tooth mouth 2 with torque frock complex.
When the device is used, an operator firstly inserts a bolt into a flange hole from the lower part of the flange, manually screws the device on the bolt, screws the device, extends a positioning shaft of a torque tool into the positioning internal spline 5, connects and matches a tooth mouth of the torque tool with a screwing tooth mouth 2 of the device, applies torque through the torque tool by a hydraulic torque wrench, the torque tool drives the screwing tooth mouth 2 and an external tooth socket 1 to rotate, the external tooth socket 1 drives an internal tooth socket 3 to mechanically stretch the bolt along the axial direction to achieve the accurate stretching force required by the bolt, a bottom disc spring applies fastening pressure by the external tooth socket 1, and during operation, accurate difference compensation is performed due to pressure and temperature fluctuation, and the pretightening force of the bolt under the operation conditions of equipment and pipelines is ensured. The utility model has reasonable structure, convenient use, capability of providing more accurate compensation force, better differential compensation effect, difficult loosening of bolts in the use process and difficult leakage of flanges.
The outer circumference of the bottom of the inner tooth socket 3 is provided with an external spline 4, and the inner ring of the base disc spring 6 is provided with a spline groove which is used for being connected and matched with the external spline 4. The bottom of the inner tooth socket 3 is connected and matched with the base disc spring 6 through the external spline 4, the two are matched tightly, the compensation force precision is improved, each bolt on the flange can obtain the same compensation force, and the flange leakage is avoided more effectively.
The inner wall of the outer tooth socket 1 and the outer wall of the inner tooth socket 3 are both provided with trapezoidal threads, and the inner wall of the inner tooth socket 3 is provided with triangular threads. Adopt trapezoidal threaded connection cooperation between outer facing 1 and the interior facing 3 for outer facing 1 can be more even 3 conductions of inward facing, do benefit to and improve the moment accuracy.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.
Claims (3)
1. The utility model provides a tensile nut dish spring subassembly which characterized in that: tensile nut dish spring subassembly includes outer facing, interior facing and base dish spring, outer facing cover is located the outside of interior facing, the outer wall of interior facing is provided with the external screw thread, outer facing with interior facing spiro union, the inner wall of interior facing be provided with be used for with bolt complex internal thread, the internal thread of interior facing revolve to with the external screw thread of interior facing revolves to opposite, the bottom of interior facing to the below of outer facing is stretched out, the bottom of interior facing in the below cover of outer facing is equipped with base dish spring, the hole at the top of interior facing is provided with and is used for with moment of torsion frock complex location internal spline, the top of outer facing evenly is provided with a plurality ofly and is used for with moment of torsion frock complex twist and moves the tooth mouth.
2. The tension nut disc spring assembly of claim 1, wherein: the outer periphery of the bottom of the inner tooth socket is provided with an external spline, and the inner ring of the base disc spring is provided with a spline groove used for being connected and matched with the external spline.
3. The tension nut disc spring assembly of claim 2, wherein: the inner wall of the outer tooth socket and the outer wall of the inner tooth socket are both provided with trapezoidal threads, and the inner wall of the inner tooth socket is provided with triangular threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122070313.2U CN215634318U (en) | 2021-08-31 | 2021-08-31 | Tensile nut dish spring subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122070313.2U CN215634318U (en) | 2021-08-31 | 2021-08-31 | Tensile nut dish spring subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215634318U true CN215634318U (en) | 2022-01-25 |
Family
ID=79904227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122070313.2U Active CN215634318U (en) | 2021-08-31 | 2021-08-31 | Tensile nut dish spring subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215634318U (en) |
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2021
- 2021-08-31 CN CN202122070313.2U patent/CN215634318U/en active Active
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